Published: Tuesday 15 July 2008

acidic oceans: Dissolved CO2 makes water more acidic. UK researchers saw a fall in the species numbers and snails with their shells disintegrating in vents in the Mediterranean sea. They say impacts such as changing of marine food web and decrease in biodiversity might become common with the increase of CO2 levels. Some of the extra CO2 emitted enters the oceans, acidifying waters globally.

spams effect: Researchers in the US say they have developed a new kind of mass spectrometer that can detect biological, chemical and nuclear threats within less than a minute and almost at the same time. Their process, called Single-Particle Aerosol Mass Spectrometry (SPAMS) could also sniff out illicit drugs and explosives without being reset in between tests.

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